Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by А.В. ГоршковfiledCriticalА.В. Горшков
Priority to SU42931ApriorityCriticalpatent/SU15492A1/en
Application grantedgrantedCritical
Publication of SU15492A1publicationCriticalpatent/SU15492A1/en